Cleaned up AMD Au1200 IDE driver:

- converted to platform bus
- removed pci dependencies
- removed virt_to_phys/phys_to_virt calls
    
System now can root off of a disk.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

diff --git a/Documentation/mips/AU1xxx_IDE.README b/Documentation/mips/AU1xxx_IDE.README
new file mode 100644

Documentation/mips/AU1xxx_IDE.README

+README for MIPS AU1XXX IDE driver - Released 2005-07-15
+
+ABOUT
+-----
+This file describes the 'drivers/ide/mips/au1xxx-ide.c', related files and the
+services they provide.
+
+If you are short in patience and just want to know how to add your hard disc to
+the white or black list, go to the 'ADD NEW HARD DISC TO WHITE OR BLACK LIST'
+section.
+
+
+LICENSE
+-------
+
+Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; either version 2 of the License, or (at your option) any later
+version.
+
+THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
+BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc.,
+675 Mass Ave, Cambridge, MA 02139, USA.
+
+Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE
+      Interface and Linux Device Driver" Application Note.
+
+
+FILES, CONFIGS AND COMPATABILITY
+--------------------------------
+
+Two files are introduced:
+
+  a) 'include/asm-mips/mach-au1x00/au1xxx_ide.h'
+     containes : struct _auide_hwif
+                 struct drive_list_entry dma_white_list
+                 struct drive_list_entry dma_black_list
+                 timing parameters for PIO mode 0/1/2/3/4
+                 timing parameters for MWDMA 0/1/2
+
+  b) 'drivers/ide/mips/au1xxx-ide.c'
+     contains the functionality of the AU1XXX IDE driver
+
+Four configs variables are introduced:
+
+  CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA    - enable the PIO+DBDMA mode
+  CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA  - enable the MWDMA mode
+  CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON - set Burstable FIFO in DBDMA
+                                           controler
+  CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ - maximum transfer size
+                                           per descriptor
+
+If MWDMA is enabled and the connected hard disc is not on the white list, the
+kernel switches to a "safe mwdma mode" at boot time. In this mode the IDE
+performance is substantial slower then in full speed mwdma. In this case
+please add your hard disc to the white list (follow instruction from 'ADD NEW
+HARD DISC TO WHITE OR BLACK LIST' section).
+
+
+SUPPORTED IDE MODES
+-------------------
+
+The AU1XXX IDE driver supported all PIO modes - PIO mode 0/1/2/3/4 - and all
+MWDMA modes - MWDMA 0/1/2 -. There is no support for SWDMA and UDMA mode.
+
+To change the PIO mode use the program hdparm with option -p, e.g.
+'hdparm -p0 [device]' for PIO mode 0. To enable the MWDMA mode use the option
+-X, e.g. 'hdparm -X32 [device]' for MWDMA mode 0.
+
+
+PERFORMANCE CONFIGURATIONS
+--------------------------
+
+If the used system doesn't need USB support enable the following kernel configs:
+
+CONFIG_IDE=y
+CONFIG_BLK_DEV_IDE=y
+CONFIG_IDE_GENERIC=y
+CONFIG_BLK_DEV_IDEPCI=y
+CONFIG_BLK_DEV_GENERIC=y
+CONFIG_BLK_DEV_IDEDMA_PCI=y
+CONFIG_IDEDMA_PCI_AUTO=y
+CONFIG_BLK_DEV_IDE_AU1XXX=y
+CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y
+CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON=y
+CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ=128
+CONFIG_BLK_DEV_IDEDMA=y
+CONFIG_IDEDMA_AUTO=y
+
+If the used system need the USB support enable the following kernel configs for
+high IDE to USB throughput.
+
+CONFIG_BLK_DEV_IDEDISK=y
+CONFIG_IDE_GENERIC=y
+CONFIG_BLK_DEV_IDEPCI=y
+CONFIG_BLK_DEV_GENERIC=y
+CONFIG_BLK_DEV_IDEDMA_PCI=y
+CONFIG_IDEDMA_PCI_AUTO=y
+CONFIG_BLK_DEV_IDE_AU1XXX=y
+CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y
+CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ=128
+CONFIG_BLK_DEV_IDEDMA=y
+CONFIG_IDEDMA_AUTO=y
+
+
+ADD NEW HARD DISC TO WHITE OR BLACK LIST
+----------------------------------------
+
+Step 1 : detect the model name of your hard disc
+
+  a) connect your hard disc to the AU1XXX
+
+  b) boot your kernel and get the hard disc model.
+
+     Example boot log:
+
+     --snipped--
+     Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
+     ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
+     Au1xxx IDE(builtin) configured for MWDMA2
+     Probing IDE interface ide0...
+     hda: Maxtor 6E040L0, ATA DISK drive
+     ide0 at 0xac800000-0xac800007,0xac8001c0 on irq 64
+     hda: max request size: 64KiB
+     hda: 80293248 sectors (41110 MB) w/2048KiB Cache, CHS=65535/16/63, (U)DMA
+     --snipped--
+
+     In this example 'Maxtor 6E040L0'.
+
+Step  2 : edit 'include/asm-mips/mach-au1x00/au1xxx_ide.h'
+
+  Add your hard disc to the dma_white_list or dma_black_list structur.
+
+Step 3 : Recompile the kernel
+
+  Enable MWDMA support in the kernel configuration. Recompile the kernel and
+  reboot.
+
+Step 4 : Tests
+
+  If you have add a hard disc to the white list, please run some stress tests
+  for verification.
+
+
+ACKNOWLEDGMENTS
+---------------
+
+These drivers wouldn't have been done without the base of kernel 2.4.x AU1XXX
+IDE driver from AMD.
+
+Additional input also from:
+Matthias Lenk <matthias.lenk@amd.com>
+
+Happy hacking!
+Enrico Walther <enrico.walther@amd.com>

arch/mips/Kconfig

@@ -799,7 +799,7 @@ config MIPS_BOSPORUS
 config MIPS_DB1200
 	bool "AMD Alchemy DB1200 board"
 	select SOC_AU1200
-	select DMA_NONCOHERENT
+	select DMA_COHERENT
 	select MIPS_DISABLE_OBSOLETE_IDE
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 

arch/mips/au1000/common/dbdma.c

@@ -197,6 +197,12 @@ find_dbdev_id (u32 id)
 	return NULL;
 }
 
+void * au1xxx_ddma_get_nextptr_virt(au1x_ddma_desc_t *dp)
+{
+        return phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+}
+EXPORT_SYMBOL(au1xxx_ddma_get_nextptr_virt);
+
 u32
 au1xxx_ddma_add_device(dbdev_tab_t *dev)
 {

arch/mips/au1000/common/platform.c

@@ -12,7 +12,7 @@
 #include <linux/init.h>
 #include <linux/resource.h>
 
-#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1xxx.h>
 
 /* OHCI (USB full speed host controller) */
 static struct resource au1xxx_usb_ohci_resources[] = {
@@ -154,7 +154,6 @@ static struct platform_device au1xxx_usb_otg_device = {
 	.resource	= au1xxx_usb_otg_resources,
 };
 
-/*** AU1200 LCD controller ***/
 static struct resource au1200_lcd_resources[] = {
 	[0] = {
 		.start          = LCD_PHYS_ADDR,
@@ -168,6 +167,19 @@ static struct resource au1200_lcd_resources[] = {
 	}
 };
 
+static struct resource au1200_ide0_resources[] = {
+	[0] = {
+		.start		= AU1XXX_ATA_PHYS_ADDR,
+		.end 		= AU1XXX_ATA_PHYS_ADDR + AU1XXX_ATA_PHYS_LEN,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= AU1XXX_ATA_INT,
+		.end		= AU1XXX_ATA_INT,
+		.flags		= IORESOURCE_IRQ,
+	}
+};
+
 static u64 au1200_lcd_dmamask = ~(u32)0;
 
 static struct platform_device au1200_lcd_device = {
@@ -180,6 +192,21 @@ static struct platform_device au1200_lcd_device = {
 	.num_resources  = ARRAY_SIZE(au1200_lcd_resources),
 	.resource       = au1200_lcd_resources,
 };
+
+
+static u64 ide0_dmamask = ~(u32)0;
+
+static struct platform_device au1200_ide0_device = {
+	.name		= "au1200-ide",
+	.id		= 0,
+	.dev = {
+		.dma_mask 		= &ide0_dmamask,
+		.coherent_dma_mask	= 0xffffffff,
+	},
+	.num_resources = ARRAY_SIZE(au1200_ide0_resources),
+	.resource	= au1200_ide0_resources,
+};
+
 #endif
 
 static struct platform_device *au1xxx_platform_devices[] __initdata = {
@@ -194,6 +221,7 @@ static struct platform_device *au1xxx_platform_devices[] __initdata = {
 	&au1xxx_usb_gdt_device,
 	&au1xxx_usb_otg_device,
 	&au1200_lcd_device,
+	&au1200_ide0_device,
 #endif
 };
 

arch/mips/au1000/pb1200/irqmap.c

@@ -22,6 +22,7 @@
  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  *  675 Mass Ave, Cambridge, MA 02139, USA.
  */
+#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/irq.h>
@@ -65,7 +66,7 @@ int au1xxx_nr_irqs = sizeof(au1xxx_irq_map)/sizeof(au1xxx_irq_map_t);
  */
 static volatile int pb1200_cascade_en=0;
 
-void pb1200_cascade_handler( int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t pb1200_cascade_handler( int irq, void *dev_id, struct pt_regs *regs)
 {
 	unsigned short bisr = bcsr->int_status;
 	int extirq_nr = 0;
@@ -78,6 +79,7 @@ void pb1200_cascade_handler( int irq, void *dev_id, struct pt_regs *regs)
 		/* Ack and dispatch IRQ */
 		do_IRQ(extirq_nr,regs);
 	}
+	return IRQ_RETVAL(1);
 }
 
 inline void pb1200_enable_irq(unsigned int irq_nr)
@@ -97,7 +99,7 @@ static unsigned int pb1200_startup_irq( unsigned int irq_nr )
 	if (++pb1200_cascade_en == 1)
 	{
 		request_irq(AU1000_GPIO_7, &pb1200_cascade_handler,
-			0, "Pb1200 Cascade", &pb1200_cascade_handler );
+			0, "Pb1200 Cascade", (void *)&pb1200_cascade_handler );
 #ifdef CONFIG_MIPS_PB1200
     /* We have a problem with CPLD rev3. Enable a workaround */
 	if( ((bcsr->whoami & BCSR_WHOAMI_CPLD)>>4) <= 3)

drivers/ide/Kconfig

@@ -778,6 +778,35 @@ config BLK_DEV_IDE_PMAC_BLINK
 	  This option enables the use of the sleep LED as a hard drive
 	  activity LED.
 
+config BLK_DEV_IDE_AU1XXX
+       bool "IDE for AMD Alchemy Au1200"
+       depends on SOC_AU1200
+choice
+       prompt "IDE Mode for AMD Alchemy Au1200"
+       default CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
+       depends on SOC_AU1200 && BLK_DEV_IDE_AU1XXX
+
+config BLK_DEV_IDE_AU1XXX_PIO_DBDMA
+       bool "PIO+DbDMA IDE for AMD Alchemy Au1200"
+
+config BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+       bool "MDMA2+DbDMA IDE for AMD Alchemy Au1200"
+       depends on SOC_AU1200 && BLK_DEV_IDE_AU1XXX
+endchoice
+
+config BLK_DEV_IDE_AU1XXX_BURSTABLE_ON
+        bool "Enable burstable Mode on DbDMA"
+        default false
+        depends BLK_DEV_IDE_AU1XXX
+        help
+          This option enable the burstable Flag on DbDMA controller
+          (cf. "AMD Alchemy 'Au1200' Processor Data Book - PRELIMINARY").
+
+config BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ
+       int "Maximum transfer size (KB) per request (up to 128)"
+       default "128"
+       depends BLK_DEV_IDE_AU1XXX
+
 config IDE_ARM
 	def_bool ARM && (ARCH_A5K || ARCH_CLPS7500 || ARCH_RPC || ARCH_SHARK)
 
@@ -1013,7 +1042,7 @@ config BLK_DEV_UMC8672
 endif
 
 config BLK_DEV_IDEDMA
-	def_bool BLK_DEV_IDEDMA_PCI || BLK_DEV_IDEDMA_PMAC || BLK_DEV_IDEDMA_ICS
+	def_bool BLK_DEV_IDEDMA_PCI || BLK_DEV_IDEDMA_PMAC || BLK_DEV_IDEDMA_ICS || BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
 
 config IDEDMA_IVB
 	bool "IGNORE word93 Validation BITS"

drivers/ide/ide-proc.c

@@ -64,6 +64,7 @@ static int proc_ide_read_imodel
 		case ide_cy82c693:	name = "cy82c693";	break;
 		case ide_4drives:	name = "4drives";	break;
 		case ide_pmac:		name = "mac-io";	break;
+		case ide_au1xxx:	name = "au1xxx";	break;
 		default:		name = "(unknown)";	break;
 	}
 	len = sprintf(page, "%s\n", name);

include/asm-mips/mach-au1x00/au1xxx.h

+/*
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _AU1XXX_H_
+#define _AU1XXX_H_
+
+#include <linux/config.h>
+
+#include <asm/mach-au1x00/au1000.h>
+
+#if defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) || defined(CONFIG_MIPS_DB1500) || defined(CONFIG_MIPS_DB1550)
+#include <asm/mach-db1x00/db1x00.h>
+
+#elif defined(CONFIG_MIPS_PB1550)
+#include <asm/mach-pb1x00/pb1550.h>
+
+#elif defined(CONFIG_MIPS_PB1200)
+#include <asm/mach-pb1x00/pb1200.h>
+
+#elif defined(CONFIG_MIPS_DB1200)
+#include <asm/mach-db1x00/db1200.h>
+
+#endif
+
+#endif /* _AU1XXX_H_ */

include/asm-mips/mach-au1x00/au1xxx_dbdma.h

@@ -368,6 +368,7 @@ void au1xxx_dbdma_dump(u32 chanid);
 u32 au1xxx_dbdma_put_dscr(u32 chanid, au1x_ddma_desc_t *dscr );
 
 u32 au1xxx_ddma_add_device( dbdev_tab_t *dev );
+void * au1xxx_ddma_get_nextptr_virt(au1x_ddma_desc_t *dp);
 
 /*
  	Some compatibilty macros --
@@ -375,9 +376,12 @@ u32 au1xxx_ddma_add_device( dbdev_tab_t *dev );
 */
 #define	au1xxx_dbdma_put_source(chanid,buf,nbytes)_au1xxx_dbdma_put_source(chanid, buf, nbytes, DDMA_FLAGS_IE)
 #define	au1xxx_dbdma_put_source_flags(chanid,buf,nbytes,flags) _au1xxx_dbdma_put_source(chanid, buf, nbytes, flags)
+#define	put_source_flags(chanid,buf,nbytes,flags) au1xxx_dbdma_put_source_flags(chanid,buf,nbytes,flags)
+
 
 #define au1xxx_dbdma_put_dest(chanid,buf,nbytes) _au1xxx_dbdma_put_dest(chanid, buf, nbytes, DDMA_FLAGS_IE)
 #define	au1xxx_dbdma_put_dest_flags(chanid,buf,nbytes,flags) _au1xxx_dbdma_put_dest(chanid, buf, nbytes, flags)
+#define	put_dest_flags(chanid,buf,nbytes,flags) au1xxx_dbdma_put_dest_flags(chanid,buf,nbytes,flags)
 
 /*
  *	Flags for the put_source/put_dest functions.

include/asm-mips/mach-au1x00/au1xxx_ide.h

+/*
+ * include/asm-mips/mach-au1x00/au1xxx_ide.h  version 01.30.00   Aug. 02 2005
+ *
+ * BRIEF MODULE DESCRIPTION
+ * AMD Alchemy Au1xxx IDE interface routines over the Static Bus
+ *
+ * Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE
+ *       Interface and Linux Device Driver" Application Note.
+ */
+#include <linux/config.h>
+
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+        #define DMA_WAIT_TIMEOUT        100
+        #define NUM_DESCRIPTORS         PRD_ENTRIES
+#else /* CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA */
+        #define NUM_DESCRIPTORS         2
+#endif
+
+#ifndef AU1XXX_ATA_RQSIZE
+        #define AU1XXX_ATA_RQSIZE       128
+#endif
+
+/* Disable Burstable-Support for DBDMA */
+#ifndef CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON
+        #define CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON  0
+#endif
+
+#ifdef CONFIG_PM
+/*
+* This will enable the device to be powered up when write() or read()
+* is called. If this is not defined, the driver will return -EBUSY.
+*/
+#define WAKE_ON_ACCESS 1
+
+typedef struct
+{
+        spinlock_t         lock;       /* Used to block on state transitions */
+        au1xxx_power_dev_t *dev;       /* Power Managers device structure */
+        unsigned	   stopped;    /* USed to signaling device is stopped */
+} pm_state;
+#endif
+
+
+typedef struct
+{
+        u32                     tx_dev_id, rx_dev_id, target_dev_id;
+        u32                     tx_chan, rx_chan;
+        void                    *tx_desc_head, *rx_desc_head;
+        ide_hwif_t              *hwif;
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+        ide_drive_t             *drive;
+        u8                      white_list, black_list;
+        struct dbdma_cmd        *dma_table_cpu;
+        dma_addr_t              dma_table_dma;
+        struct scatterlist      *sg_table;
+        int                     sg_nents;
+        int                     sg_dma_direction;
+#endif
+        struct device           *dev;
+	int			irq;
+	u32			regbase;
+#ifdef CONFIG_PM
+        pm_state                pm;
+#endif
+} _auide_hwif;
+
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+struct drive_list_entry {
+        const char * id_model;
+        const char * id_firmware;
+};
+
+/* HD white list */
+static const struct drive_list_entry dma_white_list [] = {
+/*
+ * Hitachi
+ */
+        { "HITACHI_DK14FA-20"    ,       "ALL"           },
+        { "HTS726060M9AT00"      ,       "ALL"           },
+/*
+ * Maxtor
+ */
+        { "Maxtor 6E040L0"      ,       "ALL"           },
+        { "Maxtor 6Y080P0"      ,       "ALL"           },
+        { "Maxtor 6Y160P0"      ,       "ALL"           },
+/*
+ * Seagate
+ */
+        { "ST3120026A"          ,       "ALL"           },
+        { "ST320014A"           ,       "ALL"           },
+        { "ST94011A"            ,       "ALL"           },
+        { "ST340016A"           ,       "ALL"           },
+/*
+ * Western Digital
+ */
+        { "WDC WD400UE-00HCT0"  ,       "ALL"           },
+        { "WDC WD400JB-00JJC0"  ,       "ALL"           },
+        { NULL                  ,       NULL            }
+};
+
+/* HD black list */
+static const struct drive_list_entry dma_black_list [] = {
+/*
+ * Western Digital
+ */
+        { "WDC WD100EB-00CGH0"  ,       "ALL"           },
+        { "WDC WD200BB-00AUA1"  ,       "ALL"           },
+        { "WDC AC24300L"        ,       "ALL"           },
+        { NULL                  ,       NULL            }
+};
+#endif
+
+/* function prototyping */
+u8 auide_inb(unsigned long port);
+u16 auide_inw(unsigned long port);
+u32 auide_inl(unsigned long port);
+void auide_insw(unsigned long port, void *addr, u32 count);
+void auide_insl(unsigned long port, void *addr, u32 count);
+void auide_outb(u8 addr, unsigned long port);
+void auide_outbsync(ide_drive_t *drive, u8 addr, unsigned long port);
+void auide_outw(u16 addr, unsigned long port);
+void auide_outl(u32 addr, unsigned long port);
+void auide_outsw(unsigned long port, void *addr, u32 count);
+void auide_outsl(unsigned long port, void *addr, u32 count);
+static void auide_tune_drive(ide_drive_t *drive, byte pio);
+static int auide_tune_chipset (ide_drive_t *drive, u8 speed);
+static int auide_ddma_init( _auide_hwif *auide );
+static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif);
+int __init auide_probe(void);
+
+#ifdef CONFIG_PM
+        int au1200ide_pm_callback( au1xxx_power_dev_t *dev,
+                                   au1xxx_request_t request, void *data);
+        static int au1xxxide_pm_standby( au1xxx_power_dev_t *dev );
+        static int au1xxxide_pm_sleep( au1xxx_power_dev_t *dev );
+        static int au1xxxide_pm_resume( au1xxx_power_dev_t *dev );
+        static int au1xxxide_pm_getstatus( au1xxx_power_dev_t *dev );
+        static int au1xxxide_pm_access( au1xxx_power_dev_t *dev );
+        static int au1xxxide_pm_idle( au1xxx_power_dev_t *dev );
+        static int au1xxxide_pm_cleanup( au1xxx_power_dev_t *dev );
+#endif
+
+
+/*
+ * Multi-Word DMA + DbDMA functions
+ */
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+
+        static int in_drive_list(struct hd_driveid *id,
+                                 const struct drive_list_entry *drive_table);
+        static int auide_build_sglist(ide_drive_t *drive,  struct request *rq);
+        static int auide_build_dmatable(ide_drive_t *drive);
+        static int auide_dma_end(ide_drive_t *drive);
+        static void auide_dma_start(ide_drive_t *drive );
+        ide_startstop_t auide_dma_intr (ide_drive_t *drive);
+        static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command);
+        static int auide_dma_setup(ide_drive_t *drive);
+        static int auide_dma_check(ide_drive_t *drive);
+        static int auide_dma_test_irq(ide_drive_t *drive);
+        static int auide_dma_host_off(ide_drive_t *drive);
+        static int auide_dma_host_on(ide_drive_t *drive);
+        static int auide_dma_lostirq(ide_drive_t *drive);
+        static int auide_dma_on(ide_drive_t *drive);
+        static void auide_ddma_tx_callback(int irq, void *param,
+                                           struct pt_regs *regs);
+        static void auide_ddma_rx_callback(int irq, void *param,
+                                           struct pt_regs *regs);
+        static int auide_dma_off_quietly(ide_drive_t *drive);
+        static int auide_dma_timeout(ide_drive_t *drive);
+
+#endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */
+
+/*******************************************************************************
+* PIO Mode timing calculation :                                                *
+*                                                                              *
+* Static Bus Spec   ATA Spec                                                   *
+*      Tcsoe      =   t1                                                       *
+*      Toecs      =   t9                                                       *
+*      Twcs       =   t9                                                       *
+*      Tcsh       =   t2i | t2                                                 *
+*      Tcsoff     =   t2i | t2                                                 *
+*      Twp        =   t2                                                       *
+*      Tcsw       =   t1                                                       *
+*      Tpm        =   0                                                        *
+*      Ta         =   t1+t2                                                    *
+*******************************************************************************/
+
+#define TCSOE_MASK            (0x07<<29)
+#define TOECS_MASK            (0x07<<26)
+#define TWCS_MASK             (0x07<<28)
+#define TCSH_MASK             (0x0F<<24)
+#define TCSOFF_MASK           (0x07<<20)
+#define TWP_MASK              (0x3F<<14)
+#define TCSW_MASK             (0x0F<<10)
+#define TPM_MASK              (0x0F<<6)
+#define TA_MASK               (0x3F<<0)
+#define TS_MASK               (1<<8)
+
+/* Timing parameters PIO mode 0 */
+#define SBC_IDE_PIO0_TCSOE    (0x04<<29)
+#define SBC_IDE_PIO0_TOECS    (0x01<<26)
+#define SBC_IDE_PIO0_TWCS     (0x02<<28)
+#define SBC_IDE_PIO0_TCSH     (0x08<<24)
+#define SBC_IDE_PIO0_TCSOFF   (0x07<<20)
+#define SBC_IDE_PIO0_TWP      (0x10<<14)
+#define SBC_IDE_PIO0_TCSW     (0x04<<10)
+#define SBC_IDE_PIO0_TPM      (0x0<<6)
+#define SBC_IDE_PIO0_TA       (0x15<<0)
+/* Timing parameters PIO mode 1 */
+#define SBC_IDE_PIO1_TCSOE    (0x03<<29)
+#define SBC_IDE_PIO1_TOECS    (0x01<<26)
+#define SBC_IDE_PIO1_TWCS     (0x01<<28)
+#define SBC_IDE_PIO1_TCSH     (0x06<<24)
+#define SBC_IDE_PIO1_TCSOFF   (0x06<<20)
+#define SBC_IDE_PIO1_TWP      (0x08<<14)
+#define SBC_IDE_PIO1_TCSW     (0x03<<10)
+#define SBC_IDE_PIO1_TPM      (0x00<<6)
+#define SBC_IDE_PIO1_TA       (0x0B<<0)
+/* Timing parameters PIO mode 2 */
+#define SBC_IDE_PIO2_TCSOE    (0x05<<29)
+#define SBC_IDE_PIO2_TOECS    (0x01<<26)
+#define SBC_IDE_PIO2_TWCS     (0x01<<28)
+#define SBC_IDE_PIO2_TCSH     (0x07<<24)
+#define SBC_IDE_PIO2_TCSOFF   (0x07<<20)
+#define SBC_IDE_PIO2_TWP      (0x1F<<14)
+#define SBC_IDE_PIO2_TCSW     (0x05<<10)
+#define SBC_IDE_PIO2_TPM      (0x00<<6)
+#define SBC_IDE_PIO2_TA       (0x22<<0)
+/* Timing parameters PIO mode 3 */
+#define SBC_IDE_PIO3_TCSOE    (0x05<<29)
+#define SBC_IDE_PIO3_TOECS    (0x01<<26)
+#define SBC_IDE_PIO3_TWCS     (0x01<<28)
+#define SBC_IDE_PIO3_TCSH     (0x0D<<24)
+#define SBC_IDE_PIO3_TCSOFF   (0x0D<<20)
+#define SBC_IDE_PIO3_TWP      (0x15<<14)
+#define SBC_IDE_PIO3_TCSW     (0x05<<10)
+#define SBC_IDE_PIO3_TPM      (0x00<<6)
+#define SBC_IDE_PIO3_TA       (0x1A<<0)
+/* Timing parameters PIO mode 4 */
+#define SBC_IDE_PIO4_TCSOE    (0x04<<29)
+#define SBC_IDE_PIO4_TOECS    (0x01<<26)
+#define SBC_IDE_PIO4_TWCS     (0x01<<28)
+#define SBC_IDE_PIO4_TCSH     (0x04<<24)
+#define SBC_IDE_PIO4_TCSOFF   (0x04<<20)
+#define SBC_IDE_PIO4_TWP      (0x0D<<14)
+#define SBC_IDE_PIO4_TCSW     (0x03<<10)
+#define SBC_IDE_PIO4_TPM      (0x00<<6)
+#define SBC_IDE_PIO4_TA       (0x12<<0)
+/* Timing parameters MDMA mode 0 */
+#define SBC_IDE_MDMA0_TCSOE   (0x03<<29)
+#define SBC_IDE_MDMA0_TOECS   (0x01<<26)
+#define SBC_IDE_MDMA0_TWCS    (0x01<<28)
+#define SBC_IDE_MDMA0_TCSH    (0x07<<24)
+#define SBC_IDE_MDMA0_TCSOFF  (0x07<<20)
+#define SBC_IDE_MDMA0_TWP     (0x0C<<14)
+#define SBC_IDE_MDMA0_TCSW    (0x03<<10)
+#define SBC_IDE_MDMA0_TPM     (0x00<<6)
+#define SBC_IDE_MDMA0_TA      (0x0F<<0)
+/* Timing parameters MDMA mode 1 */
+#define SBC_IDE_MDMA1_TCSOE   (0x05<<29)
+#define SBC_IDE_MDMA1_TOECS   (0x01<<26)
+#define SBC_IDE_MDMA1_TWCS    (0x01<<28)
+#define SBC_IDE_MDMA1_TCSH    (0x05<<24)
+#define SBC_IDE_MDMA1_TCSOFF  (0x05<<20)
+#define SBC_IDE_MDMA1_TWP     (0x0F<<14)
+#define SBC_IDE_MDMA1_TCSW    (0x05<<10)
+#define SBC_IDE_MDMA1_TPM     (0x00<<6)
+#define SBC_IDE_MDMA1_TA      (0x15<<0)
+/* Timing parameters MDMA mode 2 */
+#define SBC_IDE_MDMA2_TCSOE   (0x04<<29)
+#define SBC_IDE_MDMA2_TOECS   (0x01<<26)
+#define SBC_IDE_MDMA2_TWCS    (0x01<<28)
+#define SBC_IDE_MDMA2_TCSH    (0x04<<24)
+#define SBC_IDE_MDMA2_TCSOFF  (0x04<<20)
+#define SBC_IDE_MDMA2_TWP     (0x0D<<14)
+#define SBC_IDE_MDMA2_TCSW    (0x04<<10)
+#define SBC_IDE_MDMA2_TPM     (0x00<<6)
+#define SBC_IDE_MDMA2_TA      (0x12<<0)
+

include/linux/ide.h

@@ -218,7 +218,7 @@ typedef enum {	ide_unknown,	ide_generic,	ide_pci,
 		ide_rz1000,	ide_trm290,
 		ide_cmd646,	ide_cy82c693,	ide_4drives,
 		ide_pmac,	ide_etrax100,	ide_acorn,
-		ide_forced
+		ide_au1xxx, ide_forced
 } hwif_chipset_t;
 
 /*